TCP_ULP_NAME_MAX
#define TCP_ULP_BUF_MAX (TCP_ULP_NAME_MAX*TCP_ULP_MAX)
char name[TCP_ULP_NAME_MAX];
char name[TCP_ULP_NAME_MAX];
min_t(long, TCP_ULP_NAME_MAX - 1,
len = min_t(unsigned int, len, TCP_ULP_NAME_MAX);
nla_total_size(TCP_ULP_NAME_MAX);